Safety-guard.



VAW. 1. PAUL. SAFETY GUARD.

APPLICATION FILED MAY 8, 1913. 1,236,921, Patented June 26, 1917.

View *wenn *far-ivm f .t Ell iti leert@ XTILLIAM J. EAUL, 0F PETTSBURGH, PENNSYLVANEB..

SAFETY- GALRD.

Application 'Filed May 8, 1913.

To all whom t may concern.'

Be it known that I, l/VILLIAM J. Panna citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Penn., have inventel certain new and useful improvements in Safety-Guards, of which the following is a specification,

My invention relates to a substitute for Cotter pins adapted to prevent axial movement of a shaft in a bearing or a wheel or pulley carried by the shaft and my invention has for its object to provide a device which will be effective for the purposes for which a cotter pin is ordinarily used and will at the same time be so constructed as not to present any projecting point to cause accidents by catching the clothing` of persons passine near the shaft: rl`he invention has for a iurthe-r object to provide a device ot this chanacter which will coverand protect the end LAof a shaft.

l/Vith these and other objects hereinafter described .in view, my invention consists in the construction and combination ot eleH nients hereinafter described and claimed.

Referring to the drawings,4 .f

Figure l is a tace view of device em bodying my invention.

Fig. :2 is a. similar view ot a inoditied torni of my devise.

Fig. 3 is a cross sectional view on line 3-3 of Fig. 2.'

Fig. 4 is a perspective view of the device as shown in Fig. i applied to a shaft.

Fig. 5 is a longitudinal sectional. View of a portioinot a shaft having the device as shown in Fig. l applied thereto., and

6 is'a. similar view showing' the dcvice of E2 applied, to a. sh t.

ln the drawings, l in ieates a. solid .dat disk et sheet metal. h a ceiitrally located.opening` 2 ot' sutlicient diameter to tit snugly over the shaft 3. ln the forni shown in Figs. l, and the opening' 2 is formed by cutting;` out the center, and in the torni shown in Figs. 2, 3 and 6, a deine or cap formed by upsetting' the central portion of the disk. in both forms the device is pro vided at diametrically opposite points with radially and inwardly extending tongues 5 adapted to be seated in the opposite ends of a transverse bore il in the shaft 3, the outer end or point of connection of the tongues with the disk being' located outside the periphery of the openinfr.

ln use the tongues 5 are first bent to bring Specification of Letters Patent.

Patented une 2&5, itil?.

sei-iai No. 766,457.

their inner ends outside the periphery ot the opening- 2 and the device is slipped with tongues 5 advan :ing onto the shaft until the inner ends ol the toi'igues 5 rest over the outer ends ot the transverse bore (3; the inner ends ot the tongues are then straightened so as to enter the ends otx thebore t3 and the dt vice then pushed Jfarther onto the shaft thereby straightening the tongues until they are again in the plane ot the dish, and cxtending` into bore with the inner tace ot the disk resting;` against the hub ot a wheel 7, or other element which to be held against inoveinent longitudinally ot the shaft or' in contact with an element to prevent relative longitudinal movement ot the shaft. llfhen the device is thus in position, displacement ot' the device is prevented owing' to the fact that any pressure, as seen in Fig. 5, will be appliedlto the tongues, said tongues being supported approximately opposite the pressure which will be seen is applied at the surface ot shailt in this way while thel tongue .is ot relatively light construction and is easily bent for entrance into bore (l, said tongues will resista considerable amount ot' longitudinal thrust of the parts.

T he torni of' the ldevice shown in lF 2, 3 and G provides .tor covering the end of the shait by the dome er thus giving a smooth curved surface which will not catch clothing or anything else which may come in Contact with it. ln the forni of the device shown in Figs. 1l, l and 5, the disk presents a smooth outer surface tree from points or other projections such as would be liable to catch clothing,

The device may be made of sheet nie other suitable material suliiciently I" to permit the tongues to be bent, and stitl enough to retain their shape ati. l

aightened, as above described.

will, or course, be understood that the size and shape et the central ope ino; may be varied and thetongues made any lengtl desired.

Having thus described my invention, what I claim is l. locking' device for the purpose described, coinprising a plate having an opening and a plurality ot' flexible tongues ei;- tending into said opening;y Ytroni points outside ol: the periphery of the opening.

Q'. A locking device for the purpose described, coinjnising a ring' carrying pliable l l O tongues springing from points between the opening and the periphery of the ring and adapted to extend terminally Within the opening. i

3. A locking device for the purpose described, comprising a one piece ring carrying integral pliable tongues springing from points between the opening and the periphery of the ring and normally extending terminally Within the opening.

4. A device for use on a shaft consisting, of ai disk having its central portion cupped so as to form an opening Within the cup adapted to fit overltlhe end of the shaft and having oppositely arranged tongues at the base of the cup adapted to extend into openings in the shaft.

5. A device of the class described, consisting of a disk having a cupped portion adapted to cover the end of the shaft, and in- Wardly extending fiexible tongues adapted to enter cavities in the shaft. y

6. A device of the class described,., consisting of 'a disk having a central portion upstruck to form a cavity adapted to receive the end of the shaft and having tongues eX- tending into the space Within the cavity.

In testimony whereof l have affixed my 4signature in presence of two Witnesses.

WLLIAM J. PAUL. Witnesses:

EDWARD A. YOCHUM, J. L. TREFALLER, Jr. 

